dexter



No. 749,037. PATENTED JAN. 5, 1904.. T. G. DEXTER & H. HALLSTREAM.

SHEET GALIPERING DEVICE FOR PAPER HANDLING MACHINERY APPLIGATION PLLECD SEPT. 18, 1902. J

N0 MODEL. 3 SHEETS-SHEET 1- No. 749,037. PATENTED JAN. 5,1904. T. G. DEXTER & H. HALLSTREAM. SHEET GALIPERING DEVICE FOR PAPER HANDLING MACHINERY.

APPLICATION FILED SEPT. 18, 1902.

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' NO- 749,037. -PATENTED JAN. 5, 1904.

I T. C. DEXTER & H. HALLSTREAM.

SHEET OALIPERING DEVICE FOR PAPER HANDLING MACHINERY.

APPLICATION FILED SEPT. 18, 1902. N0 MODEL.

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UNITED STATES PATENT Patented January 5, 1904.

OFFICE.

TALBOT O. DEXTER AND HENRY HALLSTREAM, OF PEARL RIVER, NEW YORK; SAID HALLSTREAM ASSIGNOR TO SAID DEXTER.

SHEET-CALIPERING DEVICE FOR PAPER-HANDLING MACHINERY.

SPECIFICATION forming part of Letters Patent No. 749,037, dated January 5, 1904.

Application filed September 18. 1902. Serial No. 123,906. (No model.)

T0 at whom it may concern:

Be it known that we, TALBOT O. DEXTER and HENRY HALLSTREAM, both citizens of the United States, residing at Pearl River, in the county of Rockland, State of New York, have invented certain new and useful Improvements in Sheet-Oalipering Devices for Paper-Handling Machinery, of-which the following is a specification.

The present invention is an improvement upon the sheet-calipering mechanism covered by Patent No. 663,672, granted December 11, 1900, to Talbot 0. Dexter. In this Dexter patent the sheet-calipering device comprises, essentially, a normally stationary rotatable calipering member, which is adapted to engage and operate a suitable device controlling the throw-out mechanism which is arranged to arrest the operation of the machine to which the device is applied. In the normal operation of a paper-handling machine equipped with this patented sheet-calipering device said rotatable sheet-calipering member is not afiected by the passing sheets, because it is so set with relation to its cooperating member (between which members the successive sheets of paper pass) that the sheets will be allowed to move freely under said rotatable calipering member; but the moment an abnormal thickness of sheets attempts to pass the rotatable calipering member, as in the case of two sheets passing from the machine at the same time, said calipering mem her will be frictionally engaged and rotated sufficiently to actuate the'device which releases the throw-out mechanism, resulting in the arrest of the operation of the feedingmachine or other machine to which the mechanism is applied.

In the practical application of the sheetcalipering mechanism of the Dexter patent referred to the arrangement was such that the throw-out mechanism of the machine could operate only once during each rotation of the controlling-shaft, which operation is timed to take place just after each sheet of paper starts from the machine. It sometimes happens, however, in the operation of paperfeeding machines that a second sheet of paper will follow some little distance after the sheet which is being fed off, so that by the time the double thickness of sheets reaches the calipering device the throw-out-controlling device has passed beyond the point when it will operate, and it is therefore impossible to arrest the operation of the machine until the troublesome sheet has passed so far forward that it is liable to cause damage.

In our present invention we employ the normally stationary rotatable sheet-calipering member which forms a part of the Dexter device above referred to; but in place of the intervening controlling devices of the Dexter mechanism we employ a mechanism which is adapted to immediately arrest the operation of the machine at any point in its operation, so that the machine will be instantly stopped whenever a double thickness of sheets passes the calipering member, no matter whether at the start of the operation of feeding a sheet or at a later time during the operation of the machine. In accomplishing this result we arrange a trip finger or pawlin position above the rotatable calipering member to be moved thereby into engagement with a ratchetwheel which is mounted upon a constantlydriven shaft, said shaft being operated through the medium of suitable clutch mechanism which is capable of allowing the sudden stoppage of the shaft when it is engaged by the caliper-operated pawl and also of actuating the throw out mechanism of the machine.

In order that our invention may be fully understood, we will first describe the same with reference to the accompanying drawings and afterward pointout the novelty more particularly in the annexed claims.

In said drawings, Figure 1 is a detail longitudinal vertical sectional view of part of a paper-feeding machine, illustrating our invention applied thereto and showing the parts of the mechanism in their normal position while the machine is running. Fig. 2 is a similar view showing the parts in tripped position. Fig. 3 is a detail vertical transverse sectional view illustrating the constantly-rotating controller-shaft and its clutch mechanism which actuate the throw-out mechanism of the machine. Figs. 4 and 5 are detail views of the clutch members.

We have illustrated our invention as applied to a paper-feeding machine; but it will be clear to those skilled in the art that the invention may readily be applied to any machine which is designed to operate upon sheets of paper which pass successively through it.

In the machine shown in the drawings the pile of paper P is shown in position to be fed to a folder, printing-press, ruling-machine, or other machine designed to operate upon the paper. This pile P is mounted upon an adjustably-supported table,which is not shown.

1 indicates the frame of the machine, upon which are mounted the operating parts of the feeder, which are not shown, since they do not form any part of our present invention.

10 is the main operating-shaft of the machine, to which is secured a large gear 11, meshing with an intermediate gear 12, journaled upon a stud 13 of the machine-frame 1. The gear 12 meshes with a smaller and narrower-faced gear 15, which is formed integral with the movable member of a clutch which will presently be described.

A shaft is mounted in suitable bearings in the machine-frame and carries a ratchetwheel 25, which is located at or adjacent to the central longitudinal line of the machine. A trip finger or pawl is journaled to the machine-frame at 31 in position to engage the ratchet-wheel 25, said trip-finger having a downwardly-projecting weighted end 32, which rests directly behind an eccentricallymounted pin 33, projecting from one face of the upper rotatable calipering member 35, so that when the member 35 rotates the trip finger or pawl 30 will be moved into engagement with the ratchet-wheel 25. This upper rotatable calipering member 35 is journaled in an arm 36, pivoted at 37 to the machine-frame and supported in the desired adjusted position by means of an adjustable limiting-screw 38, threaded through a lug 36 of arm36 and engaging a rigid lug 39 of the machine-frame. By adjusting the screw 38 the normally stationary upper calipering member 35 may be adjusted to a nicety with relation to the lower constantly-rotatingcalipering-wheel 40,Which is mounted upon the shaft 41, suit-ably journaled in the machine-frame. The outer end of the shaft 20 has pinned to it a couplingcollar 50, formed with integral radial lugs 51, which engage in the radial notches 52, formed in the enlarged inner end of the sleeve 53, to detachably couple said sleeve to the shaft 20. The sleeve 53 is journaled in the bearing 16 and formed at its outer end with an enlargement or head 54. This head 54 constitutes the fixed member of the main clutch. outer face of the fixed main clutch member 54is formed with radially-extending cam lugs or projections 55, which normally engage in the corresponding cam-recesses 56, formed in the inner face of the movable main clutch member48. Thisclutchmember48isformed The with a tubular extension 58, which is journaled freely in the bearing 59, and the outer end of the tubular extension 58 is formed with angular clutch-teeth 60, which constitute one member of the auxiliary rotary clutch and are adapted to engage the corresponding clutch-teeth 61 of the other auxiliary rotary clutch member 62, freely journaled in bearing 59 in line with extension 58. Auxiliary clutch member 62 is secured to the throw-outoperating disk 63, to which the throw-outoperating link 64 is eccentrically pivoted at 65. The clutch member 62 and disk 63 are free to move outwardly slightly when clutch members 48 are forced toward them. Clutch member 62 is formed with an annular groove 66, in which engages a pin 67, projecting through slot 68 in bearing 59 and mounted upon a slide-bar 69. This slidebar 69 is formed with slots 70, in which engage setscrews '71, threaded into the bearing 59. A spring 72 connects pin '73 of slide 69 with stationary pin 74 on bearing 59 to hold slide 69, pin 67, and the engaged clutch member 62 in their normal inner position, as shown in Fig. 3 of the drawings. When clutch members 48 60 are forced outwardly, the clutch member 62 can yield sufficiently to insure clutch-teeth 6O effectively interlocking with clutch teeth 61. The clutch member 48 also carries a tube 80,which may be suitably secured thereto. Tube is shown as threaded into member 48 and tubular extension 58 and is extended from member 48 into sleeve 53 of main fixed clutch member 54. A head or plug 81 closes the inner end of tube 80, and a rod 82 projects through a central opening in plug 81 and is formed at one end with an eye 83, through which passes a pin 84 for securing rod 83 to the sleeve 53 of the fixed member of the main clutch. The outer end of rod 82 is threaded to receive adjustable head or nut 85, and surrounding rod 82 and confined between head 85 and plug 81 isaspring 86. This spring device is for the purpose of bolding movable clutch member 48 normally in engagement with fixed clutch member 54 and at the same time allow relative movement between the clutch members. The clutch member 48 has formed integral with it the gear 15, above referred to.

The link 64 is pivoted at its upper end to the forward end of the rock-arm 9l,which is keyed to a rock-shaft 92, suitably journaled in the machine-frame.

93 is a hand-lever for manually rocking, the shaft 92. The rock-shaft 92 is operatively connected with any suitable throw-out mechanism arranged to arrest the operation of the machine when operated by the movement of rock-shaft 92, caused by the stopping of the rotation of controller-shaft 20 by the engagement of the caliper-operated trip-finger 30. The throw-out mechanism is not shown in the drawings, but will be clear to those skilled in the art. The said mechanism may be con- 1 which sheets of paper are passed, and suitable structed as fully set forth in the above-named patent of Dexter, No. 663,672.

The operation of our improved sheet-caliper mechanism will be clear from the following description: As long as the sheets of paper pass singly from the machine they will move freely under the upper calipering member or wheel 35 without moving it; but as soon as an extra thickness of paper attempts to pass beneath the calipering-wheel 35, as when two sheets are moved from the pile at the same time, said wheel 35 will be rotated in the direction indicated by the arrow and will force the trip finger or pawl 30 into engagement with the ratchet-wheel 25. The shaft 20, carrying ratchet-wheel 25, is constantly rotating while the machine is operating, motion being transmitted to it through the gearing 11, 12, 15, and the main clutch members above described. When the pawl 30 engages ratchetwheel 25, shaft will be immediately stopped, and as the movable main clutch member 48 is positively driven by the gearing referred to said clutch member 48 will continue to rotate for a partial revolution until the cam-faces of the recesses 56, riding upon the projections '55,

v force the tubular extension 58 outwardly to throw auxiliary clutch-teeth into engagement with clutch-teeth 61, the result of which will be the rotation of throw-out-operating disk 63, the pulling down on link 64 and arm 91, and the rocking of shaft 92 for throwing out the main clutch of the machine. In this way the machine will be quickly stopped before the objectionable thickness of paper has gotten sufficiently beyond the caliperingpoint to cause any damage. By the time the motion of the machine has been stopped the movable member 48 of the main clutch will have made half a revolution more than the fixed member 54 of the main clutch,with the result that the projections 55 will again slip into engagement with recesses 56, as in the normal clutched position, and the auxiliary clutch-teeth 60 will be disengaged from clutch-teeth 61 in readiness for starting up the machine again. Our improved mechanism will arrest the operation of the machine at any point in its operation that the objectionable thickness of paper appears at the caliper.

Having thus described our invention, the following is what we claim as new therein and desire to secureby Letters Patent:

1. In combination with a machine through which sheets of paper are passed, and suitable throw-out mechanism adapted to arrest the operation of said machine, of a sheet-calipering device adapted to be operated by an abnormal thickness of sheets, a rotary shaft, means actuated by said calipering device for arresting the movement of said shaft, and means operated by the stopping of said shaft for actuating the throw-out mechanism.

2. In combination witha machine through throw-out mechanism adapted to arrest the operation of said machine, of a normally stationary rotatable sheet-calipering device adapted to be operated by an abnormal thickness of sheets, a rotary shaft carrying a ratchet-wheel, means operated by the stopping of said shaft for actuating the throw-out mechanism, and a tripping finger or pawl adapted to be operated by said rotatable sheetcalipering device to engage the ratchet-wheel and arrest the rotation of said shaft, substantially as set forth.

3. In combination with a machine through which sheets of paper are passed, and suitable throw-out mechanism adapted to arrest the operation of said machine, of a sheet-calipering device, a rotary shaft, driving mechanism including clutch members, one of which is fixed to said shaft and one of which is movable relatively to the fixed member,and means thrown into operation by the relative movement of the clutch members for actuating the throw-out mechanism, and means operated by the calipering device for arresting the movement of said shaft, substantially as set forth.

4:. In combination with a machine through which sheets of paper are passed, and suitable throw-out mechanism adapted to arrest the operation ofsaid machine, of a sheet-calipering device, a rotary shaft, driving mechanism including clutch members, one of which is fixed to said shaft and one of which is movable relatively to the fixed member, a spring device connecting the movable clutch member with the fixed clutch member, means thrown into operation by the movement of the movable member for actuating the throwout mechanism, and means operated by the calipering device for arresting the movement of said shaft, substantially as set forth.

5. In combination with a machine through which sheets of paper are passed, and suitable throw-out mechanism adapted to arrest the operation of said machine, of a sheet-calipering device, a rotary shaft, a main fixed clutch member upon said shaft, a main movable clutch member yieldingly engaging said fixed clutch member,means operating through said main clutch members for rotating said shaft, an auxiliary clutch thrown into operation by the movement of the movable clutch member, means connecting said auxiliary clutch with the throw-out mechanism, and means operated by the calipering device for arresting the movement of said shaft, substantially as set forth.

6. In combination with a machine through which sheets of-paper are passed, and suitable throw-out mechanism adapted to arrest the operation of said machine, of a sheet-calipering device, a rotary shaft, a main clutch member fixed to said shaft, a second main clutch member movably mounted upon said shaft in operative relation to the fixed member, a mov- &

ing device for arresting the movement of said shaft substantially as set forth.

TALBOT C. DEXTER. HENRY HALLSTREAM.

Witnesses:

J. GREEN, WM. E. KNIGHT. 

